It is hoped that the reduced price of this paperback edition will make it accessible to a wide range of scientists and students in the fields to which it is relevant: theoretical phYSics and physical chemistry , con­ densed-matter physics and materials science, computational physics and applied mathematics, etc.

Assisted by: K. Binder, D.M. Ceperley, J.-P. Hansen, M.H. Kalos, D.P. Landau, D. Levesque, H. Müller-Krumbhaar, D. Stauffer, J.-J. Weis